Which of the following most clearly represents a lawful termination of employment?

A landscaping company fires an employee who habitually leaves work earlier than he's supposed to$.$ The employee has to leave early to pick up his child from school.

A car salesman quits his job in June after signing a contract to work at the dealership until the end of the year.

A newspaper publisher fires one of its reporters after the reporter exposes discrimination within the publishing company.

A daycare center fires one of its teachers for wearing a hijab to work.